CodeStepByStep — data breach (CodeStepByStep)

Domain: codestepbystep.com · Accounts affected: 103,077 · Data exposed: Email addresses, Names, Usernames · Verified breach — In November 2025, the online coding practice tool CodeStepByStep suffered a data breach that exposed 17k records which were subsequently published online. The following month, a further corpus of data was released bringing the total to 103k. The impacted data included names, usernames and email addresses.